US STOCKS SNAPSHOT-Wall St opens flat ahead of Yellen's speech

The Dow Jones industrial average fell 9.88 points, or
0.06 percent, to 17,878.47, the S&P 500 lost 1.13 points,
or 0.05 percent, to 2,101.5 and the Nasdaq composite
added 2.13 points, or 0.04 percent, to 5,158.44.
(Reporting by Radhika Rukmangadhan in Bengaluru; Editing by Don
Sebastian)